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March 20th, 2018, 09:05 AM   #1
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Vector Algebra

Hi, I have encountered difficulties with part (b), (c) and (e).

Help is much appreciated. Thanks
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March 20th, 2018, 09:30 AM   #2
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b) a=0 or b=0 or both or a and b are perpendicular
c) a=0 or b and c =0 or b = c
e) a=0 or b=0 or both or a and b are perpendicular.
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